Machine fob hoisting and dumping coal



UNITED STATES PATENT ormon.

MACHINE FOR HOISTING AND DUMPING COAL.

Specification of Letters Patent No. 19,939, dated April 13, 1858.

To all 'whom it may concern:

VBe it known that I, GEORGE MARTZ, of Pottsville, in the county ofSchuylkill and State of Pennsylvania, have invented a new and usefulMachine for Hoisting and Dumping Coal; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the accompanying drawings, forming part ofthisspecification, in which- Figure l, is a front view of a coal hoistingand dumping machine, constructed after my invention. Fig. 2, is avertical longitudinal section of the same, the coal car being inposition ready for being hoisted. Fig. 8,is a similar section, the coalcar being in position it occupies in dumping its load.

Similar letters of reference in each of the several figures indicatecorresponding parts.

The nature of my invention consists in the employment, in. combinationwith the car and dumping chute of the peculiar arrangement of mechanism,consisting of the rising and falling gate, pivoted platform, withadjusting and lifting projections forming sections of the rails of arailway, confining catches, and releasing trip bar of the frame andplatform; and suspended overhanging tilting stop of the frame, allsubstantially as hereinafter specified. 2nd. In the arrangement of thetilting bar above the front of the platform, whether yielding orstationary, so as to insure the tilting or dumping of the car at theproper time, as presently described. Srd. Having the sections of therailroad attached to the platform so that they. may rise and come incontact with the wheels of the car, and cause the car to assume a properlifting position, and also serve for lifting the car and likewise forholding it from forward or backward play while tilted or dumped,substantially as hereinafter described.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

A, represents the frame of the machine, consisting of two uprights andsuitable cross ties to brace and hold together the uprights.

B, is a sliding gate; it is arranged to slide freely up and down overways a, a, of the frame A, being furnished with grooves to match orreceive the ways. This gate is suspended and raised and lowered by awindlass chain C, which is attached to, and winds upon a windlass D, asillustrated.

E, is a platform pivoted at a, to the gate B, as shown, andheldhorizontal while being raised to a dumping position by peculiar catches,presently to be described. This platform when in operation supports theeX- treme rear and front parts of car F, as illustrated at b, b; it alsosupports the eXtreme outer edges as indicated at c, c, and likewisesupports the wheels as shown at (Z, d. The projections or supports (Z,d, which pass up and come in contact with the wheels of the car, itshould be noticed are rounded off at the corners in order that if thecar is not eX- actly in proper position, it shall, by reason of itsrolling wheels coming in contact with said corners, be caused to assumea proper position for being elevated. These projections d, d, are placedin line with the rails e, c, of the railway F, and when the platform islowered as shown in Figs. l and 2, form intermediate sections of saidrails, as shown. The foundation of the railway being cut away in linewith these projections as shown at f, so as to allow the gate to descendthe proper distance to bring theupper edge of the projections orintermediate sections of the rails level with the stationary portions e,e, of the railway.

G, lis a vert-ical T shaped spring stop plate attached to one side ofthe platform and eX- tended upa short distance, and furnished with twohorizontal catches g, g, which occupy places against the front and backedges of one of the uprights of the gate B, and serve for preventing theplat-form tilting back or forward while lbeing elevated to a dumpingposition. f

H, is a pivoted trip bar or plate attached to the front edge of one ofthe upright's of.

the frame in such relation to the catch or stop plate G, that when thecar is raised to the position shown in Fig. l, one of the catches of thesaid stop plate comes in contact with it (thebar H) and is forced bysaid bar, laterally, sufliciently far, as illustrated in red lines,tofree the platform from the gate at this point and allow of its tiltingand dumping the car in the manner illustrated in Fig. 3. The extent ofthe forward movement of the platform being controlled by a stop s, and aback movement of the same being prevented by a stop b. I, is an inclinedchute, attached to the front of the frame.

J, is a tilt-ing stop suspended from a bearing at the front, near thetop of the frame A, this stop may be stationary, but I preferably makeit yielding, or to slide up and down in its bearing, and selfadjusting'by means of a weight or spring placed on its upper end. Thisstop overhangs the front part of the platform E, and consequently, whenthe car is on the platform and raised to a dumping position, its forkedend comes in contact with the upper edge of the sides of the car, nearthe front, and tilts the car and platform as illustrated in the drawing,Fig. 3. The car and platform in being tilted are thiown forward, and thefront end of the platform strikes upon and slides over a back stop 71 ofthe chute and thus prevented falling back between the chute and the gateB. As soon as the car is tilted, its swinging or pivoted tail board I,is ung latched and allowed to open automatically by reason of theextension end of the latchy', coming in Contact with a curved inclinedstop 7c, of the chute and being lifted thereby out of a recess in thelatch bar Z, of the frame, as illustrated in red in Fig. 3.

In practical operation, two of these machines are combined and arrangedin such a manner that the car of one shall be ascending while the car ofthe other is descending, hence it will be seen that it is important tohave the tilting bar J, yielding, so that in case the engine is reversedjust a moment after the load of one car has been dumped and before saidcar has passed down below the tripping bar or plate, this car shall havea chance of rising without danger of breaking the machine.

What I claim as my invention and desire to secure by Letters Patent, is

1. The employment, in combination with the car F, and dumping chute I ofthe peculiar arrangement of mechanism, consisting of the sliding gate B,pivoted platform E, conning catches T, g, g, trip bar II, tilting ordumping stop J; all substantially as and for the purposes set forth.

2. The employment of the tilt-ing or dumping stop bar J, whetheryielding or stationary, above the front of the platform E, substantiallyas and for the purposes set forth.

3. Having the sections d, d, of the railroad GEORGE MARTZ.

Witnesses JEROME L. RiLAND, BARNHARD BARR.

